I would say no not a halfsun either to be a half sun she'd need the number of rays same as a halfmoon which i dont think she does cant really see from the picture, sometimes you get this when pk's are bred with VT's.

My PK fry have this on their tail and they arent halfsuns or combtails.
Halfsuns tend to have the same jaggy ends to dorsal and anal and as she doesnt, she imo isnt.